[poppler] Postscript native image resolution

[Pierre-Luc Samuel]

Hi,

I've been wondering if there is a feature for pdftops that would convert 
pdf to postscript by keeping the original resolution of images embedded 
in the pdf?  The problem I'm encountering is that my pdfs contain low 
res images that are stretched to be big; pdftops converts them by 
re-rasterizing the low res images so that they look smooth.

The result is that my images now look extremely smooth, but the 
resulting postscript file size explodes.  The issue I have with "-r 
<dpi>" is that the native resolution of my images is about 150 dpi, but 
when using "-r 150", I get reasonable file sizes, but the text sections 
of the pdf becomes barely readable....  I would like to suggest a 
"-nativeimageres" option that would be independent of the existing "-r 
<dpi>" option.

Do you guys think a "-nativeimageres" option is technically possible? 
Could you give me indications where to start, in case I need to look 
deeper into this?

Thanks,
Pierre-Luc